Therm-a-Rest Hyperion -6° Long Sleeping Bag

The Therm-a-Rest Hyperion -6 °C Long is an ultralight down sleeping bag designed for treks, bivouacs, and adventures where every gram counts. Weighing only 630g, it offers an excellent warmth-to-weight ratio and compressibility for three-season use.

Its Nikwax hydrophobic 900-fill-power goose down retains loft more effectively in damp conditions than untreated down. Its box-baffled construction promotes even down distribution and limits cold spots.

To reduce weight without compromising thermal efficiency, 70% of the down is placed on the top and sides of the bag, compared to 30% under the sleeper. Removable SynergyLink™ connectors allow the bag to be attached to the sleeping pad to maintain this distribution properly positioned throughout the night.

Its ergonomic mummy cut reduces the volume of air to be heated, while the 10D ripstop nylon outer fabric with a water-repellent treatment protects the down from light moisture. The Long size is suitable for users up to 198 cm tall.

• Comfort temperature: -6 °C


• Filling: 900 cuin Nikwax Hydrophobic Down™ goose down


• Fill power: 900 cuin


• Shape: Mummy


• Outer fabric: Ripstop Nylon


• Size: Long


• Features: Differentiated construction with warmth zones, thermal collar, compression sack included